Cobalt-impregnated biochar (Co-SCG) for heterogeneous activation of peroxymonosulfate for removal of tetracycline in water. (November 2019)

• Record Type: Journal Article
• Authors: Nguyen, Van-Truc; Nguyen, Thanh-Binh; Chen, Chiu-Wen; Hung, Chang-Mao; Huang, C.P.; Dong, Cheng-Di
• Is Part Of: Bioresource technology. Volume 292(2019)
• Publication Date: 2019-11
• Subjects: Tetracycline -- Biochar -- Peroxymonosulfate -- PAHs -- Degradation; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2019.121954
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Co-SCG was synthesized and applied for tetracycline removal from water. The PAHs level in Co-SCG met the related regulations. The maximum adsorption capacity of Co-SCG biochar toward tetracycline was 370.37 mg g −1 . The catalyst remained high activity after ten-successive cycles. OH and SO4 − radicals were the major reactive species for tetracycline degradation. Abstract: Cobalt-impregnated spent coffee ground biochar (Co-SCG) was synthesized and applied for tetracycline (TC) removal from water. The results showed that Co-SCG biochar exhibited marked adsorption capacity and catalyst activity. The maximum adsorption capacity of Co-SCG biochar toward TC was 370.37 mg g −1 . TC was almost completely degraded in 25 min with a rate constant of 17.78 × 10 −2 min −1 under the following optimal condition: TC concentration of 0.2 mM, PMS concentration of 0.6 mM, Co-SCG dosage of 100 mg L −1, and pH of 7.0. Co-SCG was characterized for surface properties by SEM, TEM, HRTEM, and BET. The concentration of 16 PAHs in Co-SCG biochar was studied also. Results demonstrated that Co-SCG was an effective eco-friendly material for the removal of tetracycline from water.